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Citronellal

Methacrolein

trans-2-Methyl-2-butenal

Citronellal or rhodinal (C10H18O) is a monoterpenoid aldehyde, the main component in the mixture of terpenoid chemical compounds that give citronella oil its distinctive lemon scent.

Citronellal is a main isolate in distilled oils from the plants Cymbopogon (excepting C. citratus, culinary lemongrass), lemon-scented gum, and lemon-scented teatree. The (S)-(−)-enantiomer of citronellal makes up to 80% of the oil from kaffir lime leaves and is the compound responsible for its characteristic aroma.

Citronellal has insect repellent properties, and research shows high repellent effectiveness against mosquitoes. Another research shows that citronellal has strong antifungal qualities.

Compendial status

  • British Pharmacopoeia

References

References

  1. '''Citronellal''', ''[[The Merck Index]]'', 12th Edition
  2. {{GESTIS
  3. (2003). "Volatile constituents of Cymbopogon nardus (Linn.) Rendle". Flavour and Fragrance Journal.
  4. (2005). "Evaluation of Repellency Effect of Two Natural Aroma Mosquito Repellent Compounds, Citronella and Citronellal". Entomological Research.
  5. Kazuhiko NAKAHARA, Najeeb S. ALZOREKY1, Tadashi YOSHIHASHI, Huong T. T. NGUYEN and Gassinee TRAKOONTIVAKORN. (2003). "Chemical Composition and Antifungal Activity of Essential Oil from Cymbopogon nardus (Citronella Grass)". JARQ.
  6. The British Pharmacopoeia Secretariat. (2009). "Index, BP 2009".
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flavors alkenals monoterpenes
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